Abstract
Nanodispersed carbon was obtained via high-temperature combustion of acetylene–oxygen mixtures in a flow-through tubular chamber in cyclic detonation waves (“pulsed detonation”) at a constant propagation velocity (Ddet ≈ 2150 m s–1). It was found that the position of a plateau in the curve describing how the detonation velocity depends on the content of oxygen in the starting detonation mixture in the range 15–30% coincides with the range of descending branches of the dependences of the specific adsorption surface area and adsorption of dibutyl phthalate by aggregated particles. Various physicochemical methods of analysis (X-ray diffraction analysis, Raman spectroscopy, high-resolution transmission electron microscopy, etc.) were used to comparatively examine the properties of nanodispersed carbon and of the known industrially produced domestic and foreign brands of technical-grade carbon. The conditions were found in which detonation nanocarbon particles are obtained in a certain range of parameters of micro- and macrostructures with improved morphology and basic electrical properties.
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Original Russian Text © A.G. Shaitanov, Yu.V. Surovikin, I.V. Rezanov, A.A. Shtertser, V.Yu. Ul’yanitskii, A.A. Vasil’ev, V.A. Likholobov, 2018, published in Zhurnal Prikladnoi Khimii, 2018, Vol. 91, No. 12, pp. 1751−1759.
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Shaitanov, A.G., Surovikin, Y.V., Rezanov, I.V. et al. Synthesis and Study of Nanodispersed Carbon in the Combustion of Acetylene in a Flow Detonation Tube. Russ J Appl Chem 91, 2003–2011 (2018). https://doi.org/10.1134/S1070427218120121
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DOI: https://doi.org/10.1134/S1070427218120121